<span>The Adams–Onís Treaty of 1819, also known as the Transcontinental Treaty, the Florida Purchase Treaty, or theFlorida Treaty, was a treaty between the United States and Spainin 1819 that ceded Florida to the U.S. and defined the boundary between the U.S. and New Spain.</span>
It could either be a or b i am not for sure
i think it might be B
Americas and Oceania were similar in the way that first they both could developed experienced agricultural practices. Second, they could have their own distinct architecture, art and some other cultural characteristics with any influence from the outside. Third, some external groups sustained their nomadic hunter.-gathering lifestyle. And finally, both of them faced dangers of overpopulation and exposed of diseases they had never been exposed to. They both were different just because they developed large sophisticated societies in isolation merely.
Commander in chief of the National Revolutionary Army (from which he came to be known as Generalissimo), he led the Northern Expedition from 1926 to 1928, before defeating a coalition of warlords and nominally reunifying China under a new Nationalist government.